Who says it may have detected signals from alien civilisations

The narrow-band electromagnetic signals detected by Sky Eye — the world’s largest radio telescope — differ from previous ones captured and the team is further investigating them, the report said, citing Zhang Tonjie, chief scientist of an extraterrestrial civilization search team co-founded by Beijing Normal University, the National Astronomical Observatory of the Chinese Academy of Sciences and the University of California, Berkeley.

It isn’t clear why the report was apparently removed from the website of the Science and Technology Daily, the official newspaper of China’s science and technology ministry, though the news had already started trending on social network Weibo and was picked up by other media outlets, including state-run ones.

In September 2020, Sky Eye, which is located in China’s southwestern Guizhou province and has a diameter of 500 meters (1,640 feet), officially launched a search for extraterrestrial life. The team detected two sets of suspicious signals in 2020 while processing data collected in 2019, and found another suspicious signal in 2022 from observation data of exoplanet targets, Zhang said, according to the report.

China’s Sky Eye is extremely sensitive in the low-frequency radio band and plays a critical role in the search for alien civilizations, Zhang is reported to have said.

The suspicious signals could, however, also be some kind of radio interference and requires further investigation, he added.

It isn’t clear why the report was apparently removed from the website of the Science and Technology Daily, the official newspaper of China’s science and technology ministry, though the news had already started trending on social network Weibo and was picked up by other media outlets, including state-run ones.

• In September 2020, Sky Eye, which is located in China’s southwestern Guizhou province and has a diameter of 500 meters (1,640 feet), officially launched a search for extraterrestrial life.
• China said its giant Sky Eye telescope may have picked up signs of life beyond Earth, according to a report by the state-backed Science and Technology Daily, which then appeared to have deleted the report and posts about the discovery.

• While false alarms and unusual radio signals have been observed before, the narrow-band electromagnetic signals detected by Sky Eye - the world's largest radio telescope - differ from previous ones captured and the team is further investigating them

• In 1977, Ohio State University's Big Ear radio telescope in the United States had detected a strong narrowband radio signal. It was observed that an extraterrestrial signal was emanating from the direction of the constellation Sagittarius, and was called the "Wow! signal."
• The Five-hundred-metre Aperture Spherical Telescope – known as FAST – finally went operational in 2020 and began sifting through the cosmos to find evidence of intelligent alien life.
• As Insider's Azmi Haroun previously reported, the FAST telescope, which is located in Guizhou province, can detect faint radio-waves from pulsars and materials in galaxies far away.
• To date, those researchers have identified two sets of signals from 2019 when processing data in 2022 and one set of signals this year, Zhang told Science and Technology Daily.